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|Title:||Model-based condition monitoring of a vanadium redox flow battery||Authors:||Meng, Shujuan
Lim, Tuti Mariana
|Keywords:||Engineering::Civil engineering||Issue Date:||2019||Source:||Meng, S., Xiong, B., & Lim, T. M. (2019). Model-based condition monitoring of a vanadium redox flow battery. Energies, 12(15), 3005-. doi:10.3390/en12153005||Journal:||Energies||Abstract:||The safe, efficient and durable utilization of a vanadium redox flow battery (VRB) requires accurate monitoring of its state of charge (SOC) and capacity decay. This paper focuses on the unbiased model parameter identification and model-based monitoring of both the SOC and capacity decay of a VRB. Specifically, a first-order resistor-capacitance (RC) model was used to simulate the dynamics of the VRB. A recursive total least squares (RTLS) method was exploited to attenuate the impact of external disturbances and accurately track the change of model parameters in realtime. The RTLS-based identification method was further integrated with an H-infinity filter (HIF)-based state estimator to monitor the SOC and capacity decay of the VRB in real-time. Experiments were carried out to validate the proposed method. The results suggested that the proposed method can achieve unbiased model parameter identification when unexpected noises corrupt the current and voltage measurements. SOC and capacity decay can also be estimated accurately in real-time without requiring additional open-circuit cells.||URI:||https://hdl.handle.net/10356/141904||ISSN:||1996-1073||DOI:||10.3390/en12153005||Rights:||© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||CEE Journal Articles|
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